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Chromium compounds information


The Pourbaix diagram for chromium in pure water, perchloric acid, or sodium hydroxide[1][2]

Chromium compounds are compounds containing the element chromium (Cr). Chromium is a member of group 6 of the transition metals. The +3 and +6 states occur most commonly within chromium compounds, followed by +2; charges of +1, +4 and +5 for chromium are rare, but do nevertheless occasionally exist.[3][4]

  1. ^ Kotaś, J.; Stasicka, Z. (2000). "Chromium occurrence in the environment and methods of its speciation". Environmental Pollution. 107 (3): 263–283. doi:10.1016/S0269-7491(99)00168-2. PMID 15092973.
  2. ^ Puigdomenech, Ignasi Hydra/Medusa Chemical Equilibrium Database and Plotting Software Archived 5 June 2013 at the Wayback Machine (2004) KTH Royal Institute of Technology
  3. ^ Clark, Jim. "Oxidation states (oxidation numbers)". Chemguide. Retrieved 3 October 2018.
  4. ^ Cite error: The named reference Greenwood was invoked but never defined (see the help page).

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Chromium compounds

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Chromium compounds are compounds containing the element chromium (Cr). Chromium is a member of group 6 of the transition metals. The +3 and +6 states...

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Chromium

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chrōma, meaning color, because many chromium compounds are intensely colored. Industrial production of chromium proceeds from chromite ore (mostly FeCr2O4)...

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Hexavalent chromium

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hexavalent chromium compounds such as chromium trioxide and various salts of chromate and dichromate. Industrial uses of hexavalent chromium compounds include...

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Chromate and dichromate

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hexavalent chromium compounds can cause lung cancer. Also positive associations have been observed between exposure to chromium (VI) compounds and cancer...

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Chromium oxide

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which includes the hypothetical compound chromium(II) chromate Chromium trioxide (chromium(VI) oxide), CrO3 Chromium(VI) oxide peroxide, CrO5 Mixed valence...

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Potassium dichromate

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various laboratory and industrial applications. As with all hexavalent chromium compounds, it is acutely and chronically harmful to health. It is a crystalline...

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Chromium trioxide

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Chromium trioxide (also known as chromium(VI) oxide or chromic anhydride) is an inorganic compound with the formula CrO3. It is the acidic anhydride of...

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Chrome plating

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substitute for chrome such as nickel may be used for aesthetic purposes. Chromium compounds used in electroplating are toxic. In most countries, their disposal...

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Pyridinium chlorochromate

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ISBN 978-0-387-23607-0. IARC Monographs Supplement 7, Chromium and Chromium Compounds History of PCC National Pollutant Inventory, Chromium(VI) Compounds Fact Sheets...

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Sodium dichromate

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via conversion to sodium dichromate and virtually all compounds and materials based on chromium are prepared from this salt. In terms of reactivity and...

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Chromic acid

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sulfuric acid to a dichromate, which may contain a variety of compounds, including solid chromium trioxide. This kind of chromic acid may be used as a cleaning...

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Chromyl chloride

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as the dehydration agent. It can also be prepared directly by exposing chromium trioxide to anhydrous hydrogen chloride gas. CrO3 + 2 HCl ⇌ CrO2Cl2 + H2O...

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Chromium hexacarbonyl

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Chromium hexacarbonyl (IUPAC name: hexacarbonylchromium) is a chromium(0) organometallic compound with the formula Cr(CO)6. It is a homoleptic complex...

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Sodium chromate

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sodium dichromate, the precursor to most chromium compounds and materials. The industrial route to chromium(III) oxide involves reduction of sodium chromate...

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Calcium chromate

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organic compounds (e.g. alcohols) or reducing agents (e.g. metals) to the corresponding carbonyl compounds or metal oxides while the chromium(VI) centre...

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Chromium toxicity

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chromium—especially hexavalent chromium. Hexavalent chromium and its compounds are toxic when inhaled or ingested. Trivalent chromium is a trace mineral that...

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